Calculate

Dry Stone Walling Bursary Training Portfolio

16.07.18 - 12.07.19

P. Jeyacheya

Workbook Two

Workbook Two consists of five questions. Together the questions cover a range of topics that are useful to a dry stone waller. Questions 1 & 2 cover the classification of rocks and how to calcuate the volumes & tonnage needed for building a dry stone wall. Questions 3 & 4 cover the structure of a dry stone wall and the potential faults that could occur for a number of reasons. The final question looks at how a dry stone wall provides habitat for a variety of organisms.

The answers are mostly highlights and are not intended to give a full understanding of all the topics covered. Instead they serve as an introduction that should be build on over time and with experience.

Workbook 2: Calculate

Q2a:

Calculate the volume of the following walls:

A 20 1.2 0.6 0.3 0.45 10.8
B 50 1.8 1.00 0.5 0.75 67.5
C 80 1.4 0.75 0.4 0.575 64.4

Q2b:

For each of the walls above, calculate the tonnage needed for each of these type of stone:
The values for Volume (2) and Tonnes needed (2) account for the wall being made up of 15% air.

A Carboniferous Limestone 2.5 10.8 27 9.18 22.95
B Gritstone 2.2 67.5 148.5 57.37 126.22
C Granite 2.6 64.4 167.44 54.74 142.32
A Cotswold Oolitic Limestone 2.0 10.8 20.4 9.18 18.36
B Old Red Sandstone 2.35 67.5 158.63 57.37 134.82
C Portland Oolitic Limestone 2.15 64.4 138.46 54.74 117.69

Q2c:

Give 3 common sources of stone:

Field walling

Surface field stone

Garden walls

Derelict walls & buildings

Decorative features

Abondoned quarries
Self quarried stone
Professionally quarried stone

Contact Us

Don’t put your project on hold. If you would like to know more about our dry stone walling services, then email us directly  on drystone@rootscrafts.com or call us at 077 5321 8045.

Alternatively, you can fill out our contact form here here.

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Our Services

Projects covered include:

  • Free estimates & quotations
  • Traditional dry stone walling
  • Retaining Walls
  • Cheek ends / wall heads
  • Garden walls
  • Field Walls
  • Gap Repairs
  • New walls with new or reclaimed stone
  • Boundary walls
  • Ornamental walls feature walls
  • Dry stone walls with mortared coping stones
  • Mortared walls

Areas We Cover

Lancashire boroughs of

  • Rossendale
  • Blackburn with Darwen
  • Hyndburn
  • Burnley
  • Pendle
  • and further afield ...

Services also extended to our nearest neighbours in:

  • Todmorden
  • Hebden Bridge
  • Sowerby Bridge
  • Littleborough
  • ...and everywhere within that geographical circle

Membership

Professional member of the Dry Stone Walling Association of Great Britain (DSWA).

I am a member of the Otley & Yorkshire Dales Branch of the DSWA.

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